'My Covenant' in the Bible

Gather yourselves unto me - ye my men of lovingkindness, Who have solemnised my covenant over sacrifice.

But unto the wicked God saith, What hast thou to do to declare my statutes, or that thou shouldest take my covenant in thy mouth?

My mercy will I keep for him for evermore, and my covenant shall stand fast with him.

My covenant will I not break, nor alter the thing that is gone out of my lips.

If thy children will keep my covenant and my testimony that I shall teach them, their children shall also sit upon thy throne for evermore.